High-speed storage equipment based on NAND flash memory and file management method

A file management method and high-speed storage technology, applied in the field of file management, can solve problems such as speed reduction and low space utilization, and achieve the effects of extending service life, speeding up storage, and being easy to use.

Active Publication Date: 2016-07-13
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0009] In view of the above problems, the object of the present invention is to provide a high-speed storage device and file management method based on NAND flash memory, which solves the problems of reduced speed and low space utilization when the existing file management system is used for high-speed storage devices

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  • High-speed storage equipment based on NAND flash memory and file management method
  • High-speed storage equipment based on NAND flash memory and file management method
  • High-speed storage equipment based on NAND flash memory and file management method

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] An embodiment of the present invention provides a file management method of a high-speed storage device based on NAND flash memory. The high-speed storage device is a NAND chipset composed of a plurality of NAND storage chips, and the NAND chipset includes a plurality of block storage spaces.

[0058] Such as figure 1 As shown, the file management method includes the following steps:

[0059] Step 1. Divide the multiple block storage spaces of the NAND...

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Abstract

The invention belongs to the technical field of file management and discloses high-speed storage equipment based on an NAND flash memory and a file management method.The method includes the steps that multiple block storage spaces of an NAND chip set are sequentially divided into six parts which include a bad block information list, a block use information list, a file information list, reserved blocks, file data blocks and mapping blocks; the bad block information list is acquired, and bad blocks are shielded during file management; the block use information list is acquired, and the use condition of each block is acquired; the file information list is acquired, and the number of files stored in the NAND chip set and corresponding storage positions are acquired; file operation commands are acquired, and file write operation or file red operation or file deletion operation is conducted on the corresponding storage spaces of the file data blocks according to the file operation commands; the content of the block use information list and the content of the file information list are updated.The problems that when an existing file management system is used for high-speed storage equipment, the speed is decreased, and the space utilization rate is low are solved.

Description

technical field [0001] The invention relates to the technical field of file management, in particular to a high-speed storage device based on NAND flash memory and a file management method, which are used for managing large files in an embedded high-speed real-time storage device. Background technique [0002] With the rapid development of modern science and technology, the importance of high-speed storage devices has become increasingly prominent, and has been widely used in key fields such as military, communication and medical equipment, such as radar real-time imaging systems, large-capacity real-time data transmission of communication base stations and nuclear magnetic resonance images real-time processing, etc. But the existing file system is not suitable for direct use in high-speed storage devices. [0003] NAND flash memory is a kind of FLASH memory. It reads and writes data in units of pages and erases data in units of blocks. It uses a non-linear macro-cell mode ...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0643G06F3/0679
Inventor 贾艳艳
Owner XIAN UNIV OF SCI & TECH
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